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"),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br"),t("span",{staticClass:"line-number"},[s._v("2")]),t("br"),t("span",{staticClass:"line-number"},[s._v("3")]),t("br"),t("span",{staticClass:"line-number"},[s._v("4")]),t("br"),t("span",{staticClass:"line-number"},[s._v("5")]),t("br"),t("span",{staticClass:"line-number"},[s._v("6")]),t("br")])]),t("p",[s._v("那么接下来，我们就来实现这个函数体内部的逻辑——发送请求。")]),s._v(" "),t("h2",{attrs:{id:"利用-xmlhttprequest-发送请求"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#利用-xmlhttprequest-发送请求"}},[s._v("#")]),s._v(" 利用 XMLHttpRequest 发送请求")]),s._v(" "),t("p",[s._v("我们并不想在 "),t("code",[s._v("index.ts")]),s._v(" 中去实现发送请求的逻辑，我们利用模块化的编程思想，把这个功能拆分到一个单独的模块中。")]),s._v(" "),t("p",[s._v("于是我们在 "),t("code",[s._v("src")]),s._v(" 目录下创建一个 "),t("code",[s._v("xhr.ts")]),s._v(" 文件，我们导出一个 "),t("code",[s._v("xhr")]),s._v(" 方法，它接受一个 "),t("code",[s._v("config")]),s._v(" 参数，类型也是 "),t("code",[s._v("AxiosRequestConfig")]),s._v(" 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"),t("code",[s._v("XMLHttpRequest")]),s._v(" 的学习，我希望同学们去 "),t("a",{attrs:{href:"https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest",target:"_blank",rel:"noopener noreferrer"}},[s._v("mdn"),t("OutboundLink")],1),s._v(" 上系统地学习一下它的一些属性和方法，当做参考资料，因为在后续的开发中我们可能会反复查阅这些文档资料。")]),s._v(" "),t("h3",{attrs:{id:"引入-xhr-模块"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#引入-xhr-模块"}},[s._v("#")]),s._v(" 引入 xhr 模块")]),s._v(" "),t("p",[s._v("编写好了 "),t("code",[s._v("xhr")]),s._v(" 模块，我们就需要在 "),t("code",[s._v("index.ts")]),s._v(" 中去引入这个模块，如下：")]),s._v(" "),t("div",{staticClass:"language-typescript line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-typescript"}},[t("code",[t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("import")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("{")]),s._v(" AxiosRequestConfig "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("}")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token 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"),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("然后我们去控制台执行命令")]),s._v(" "),t("div",{staticClass:"language-bash line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-bash"}},[t("code",[t("span",{pre:!0,attrs:{class:"token function"}},[s._v("npm")]),s._v(" run dev\n")])]),s._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[s._v("1")]),t("br")])]),t("p",[s._v("相当于执行了 "),t("code",[s._v("node examples/server.js")]),s._v("，会开启我们的 server。")]),s._v(" "),t("p",[s._v("接着我们打开 chrome 浏览器，访问 "),t("code",[s._v("http://localhost:8080/")]),s._v(" 即可访问我们的 demo 了，我们点到 "),t("code",[s._v("Simple")]),s._v(" 目录下，通过开发者工具的 network 部分我们可以看到成功发送到了一条请求，并在 response 中看到了服务端返回的数据。")]),s._v(" "),t("p",[s._v("至此，我们就实现了一个简单的请求发送，并编写了相关的 demo。但是现在存在一些问题：我们传入的 "),t("code",[s._v("params")]),s._v(" 数据并没有用，也没有拼接到 "),t("code",[s._v("url")]),s._v(" 上；我们对 request body 的数据格式、请求头 headers 也没有做处理；另外我们虽然从网络层面收到了响应的数据，但是我们代码层面也并没有对响应的数据做处理。那么下面一章，我们就来解决这些问题。")])])}),[],!1,null,null,null);t.default=e.exports}}]);
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